clock

A device that tells time; a descendant of the sundial, which was an ancient instrument that was used to tell time, employing the use of shadows and the sun. Today's clocks either come in the form of electronic, digital clocks with alarms; wall clocks powered by batteries that use the classic "hand" design; and watches of many designs and face colors, or has a chain connected to it and a click-closing lid, known as a pocketwatch. These watches are useful when you have to meet someone somewhere at a specific time.